28858427 has 16 divisors (see below), whose sum is σ = 32444160. Its totient is φ = 25488000.

The previous prime is 28858421. The next prime is 28858439. The reversal of 28858427 is 72485882.

It is a cyclic number.

It is not a de Polignac number, because 28858427 - 2⁴ = 28858411 is a prime.

It is a super-3 number, since 3×28858427³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28858421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40349 + ... + 41057.

It is an arithmetic number, because the mean of its divisors is an integer number (2027760).

Almost surely, 2^28858427 is an apocalyptic number.

28858427 is a deficient number, since it is larger than the sum of its proper divisors (3585733).

28858427 is a wasteful number, since it uses less digits than its factorization.

28858427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its digits is 286720, while the sum is 44.

The square root of 28858427 is about 5372.0040022323. The cubic root of 28858427 is about 306.7309160961.

The spelling of 28858427 in words is "twenty-eight million, eight hundred fifty-eight thousand, four hundred twenty-seven".